main()
{
    int i, num1,num2,temp;
    printf("The fraction series with demominatr 40 is :\n");
    for (i=1; i<=40; i++)
    {
        num1=40;
        num2=i;
        while ( num2!=0)
        {
            temp=num1%num2;
            num1=num2;
            num2=temp;
        }
        if (num1==1)
          printf("%d/40\n",i);
    }
}